$def with(msg)
<html lang="zh-CN">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>不得鸟优惠券</title>
</head>
<body>
<div class="container">
<p class = "msg">$msg</p>
</div>
</body>
</html>
